JPH0134957B2 - - Google Patents
Info
- Publication number
- JPH0134957B2 JPH0134957B2 JP13698983A JP13698983A JPH0134957B2 JP H0134957 B2 JPH0134957 B2 JP H0134957B2 JP 13698983 A JP13698983 A JP 13698983A JP 13698983 A JP13698983 A JP 13698983A JP H0134957 B2 JPH0134957 B2 JP H0134957B2
- Authority
- JP
- Japan
- Prior art keywords
- coating
- radiation
- zrsio
- heat
- infrared
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000005855 radiation Effects 0.000 claims description 24
- 239000002131 composite material Substances 0.000 claims description 12
- 229920001558 organosilicon polymer Polymers 0.000 claims description 9
- 229910006501 ZrSiO Inorganic materials 0.000 claims description 8
- 239000000945 filler Substances 0.000 claims description 6
- 239000008199 coating composition Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052777 Praseodymium Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims 1
- 238000007254 oxidation reaction Methods 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 29
- 239000011248 coating agent Substances 0.000 description 24
- 239000010408 film Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000010409 thin film Substances 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229920000592 inorganic polymer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007750 plasma spraying Methods 0.000 description 2
- 230000000191 radiation effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910052845 zircon Inorganic materials 0.000 description 2
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 2
- 238000004566 IR spectroscopy Methods 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910001361 White metal Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 210000004905 finger nail Anatomy 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010969 white metal Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Resistance Heating (AREA)
- Paints Or Removers (AREA)
Description
産業上の利用分野
本発明は、暖房・調理などで、輻射加熱を利用
する分野において、加熱体よりの輻射について、
赤外線輻射効果を付与するためのコーテイング組
成物に関するもので、加熱体表面に適用するため
のものである。
従来例の構成とその問題点
従来、この種のコーテイングとして、TiO2、
ZrO2、Ar2O3などの赤外線輻射材料をガラスフリ
ツトなどの耐熱性結合剤中に分散させた被覆が知
られているが、これは、200μｍ程度の被覆の厚
みが必要であり、内部に応力歪みが残留してヒー
トシヨツクに弱い問題点があつた。また、600℃
以上の温度にすると被覆が熔融するため、600℃
以上の高温では使用できなかつた。
また、プラズマ溶射により、赤外線輻射材料の
被覆を形成する方法があるが、基材との熱膨張率
とを合わせるための被覆層を下層に形成する必要
があり、その被覆の形成工程が極めて複雑であつ
た。また、被覆は焼結していないため、非常にポ
ーラスで金属基材に適用した場合には、金属が腐
食して、短期間で使用に耐えなくなつてしまう場
合があつた。またプラズマ溶射の場合にも、被覆
の厚みは200μｍ以上となり、ヒートシヨツク等
に弱い問題点があつた。
また、これ等の従来技術においては、輻射強度
の波長選択性は余り考慮されておらず、6μｍ以
下の波長では輻射強度が小さく、6μｍ以上の遠
赤外線波長域では、輻射強度が大きくなる遠赤外
線選択輻射効果は、ほとんど付与されていなかつ
た。
発明の目的
本発明はかかる従来の問題点を解消するもので
10〜50μｍの薄膜にて、高効率赤外線輻射能を付
与するものである。また、薄膜であるため、金網
バーナの炎孔部、セラミツクバーナの炎孔部など
複雑な形状にも適用が可能で目詰まりを起こした
りする懸念がなく、適用範囲が広い。
また900℃〜1000℃の高温の加熱面への適用が
可能である。またヒートシヨツクに強く、各種基
材への適用が可能である。
被覆形成はスプレーにて塗布焼成するのみでよ
く製造工程が簡単である。
以上の効果を有する被覆を提供することを目的
とするものである。
発明の構成
この目的を達成するために本発明は、ポリボロ
シロキサン樹脂を主成分とする有機ケイ素重合体
およびPr、Fe、Ｖ、Ni、Coの群から選定した１
種以上の元素の酸化物とZrSiO3との複合酸化物
および耐熱性充填剤を含む被覆の硬化体層を加熱
体表面に形成する。
この構成によつて、10〜50μｍの薄膜であつて
も約6μｍ以下の近赤外線域では輻射強度が小さ
く6μｍ以上の遠赤外線域では輻射強度が大きい
選択輻射が得られる。
ポリボロシロキサン樹脂を主成分とする有機ケ
イ素重合体は、“セミ無機ポリマー”としての特
性を有し、室温状態では、有機高分子と同様の性
状で、塗料化等の操作性の面で優れている。加熱
するとその有機分は分解して、Si、Ｃ、Ｂを骨格
として、セラミツク化する。完全はセラミツク化
は、600℃にて行なわれる。したがつて、Pr、
Fe、Ｖ、Ni、Coの群から選定した１種以上の酸
化物とZrSiO3との複合酸化物は、比較的容易に
塗料化分散させることが可能である。この様にし
て調整した塗料をスプレーにて塗布すれば、各種
基材上に、極めて容易に被覆を形成することがで
きる。
この様にして形成してコーテイングは、完全に
セラミツク化しているため、各種基材との良好な
密着性と、900〜1000℃までの十分な耐熱性を有
している。
実施例の説明
ポリボロシロキサンを主成分とする有機ケイ素
重合体として、昭和電線電纜(株)の「無機ポリマ
ー」（SMP−32）を用いた。これは
のような構造のポリマーを主成分とするものであ
る。
このバインダーは、600℃でセラミツク化して
安定化するが、その間の熱分解により、初期の2/
３の重量が失なわれ、残渣はほぼ1/3の重量とな
る。
Pr、Fe、Ｖ、Ni、Coの群から選定した１種以
上の元素の酸化物とジルコン（ZrSiO3）との複
合酸化物の有機ケイ素重合体中への分散は、アト
ライタを用いて約20時間分散混合させることによ
り行なつた。溶剤として、Ｎ−メチルピロリド
ン、希釈剤として、トルエンを用いた。
表１の複合酸化物系を用いて上記条件にて、塗
料を調合した。塗料の構成は、各複合酸化物を
100重量部、有機ケイ素重合体（「SMP−32」）
100重量部、トルエンを100重量部の配合とした。
これ等のジルコンの複合酸化物は、通常は陶磁
器の着色剤として用いられるが、粒径が荒く10μ
ｍ以上の粒径にて用いられている。
Industrial Application Field The present invention is applicable to the field of using radiant heating in heating, cooking, etc., regarding radiation from a heating body.
The present invention relates to a coating composition for imparting an infrared radiation effect, and is applied to the surface of a heated body. Conventional structure and problems Conventionally, this type of coating has been made using TiO 2 ,
Coatings in which infrared radiating materials such as ZrO 2 and Ar 2 O 3 are dispersed in heat-resistant binders such as glass frits are known, but this requires a coating thickness of about 200 μm and causes internal stress. There was a problem with the heat shock being weak due to residual distortion. Also, 600℃
If the temperature exceeds 600℃, the coating will melt.
It could not be used at higher temperatures. In addition, there is a method of forming a coating of infrared radiating material by plasma spraying, but it requires forming a coating layer underneath to match the coefficient of thermal expansion with the base material, and the process of forming the coating is extremely complicated. It was hot. Furthermore, since the coating is not sintered, it is very porous and when applied to a metal substrate, the metal may corrode and become unusable in a short period of time. In addition, in the case of plasma spraying, the thickness of the coating was 200 μm or more, and there was a problem that it was susceptible to heat shock. In addition, in these conventional technologies, the wavelength selectivity of the radiation intensity is not taken into consideration, and the radiation intensity is small at wavelengths of 6 μm or less, and the radiation intensity is high in the far infrared wavelength region of 6 μm or more. Almost no selective radiation effect was imparted. Purpose of the invention The present invention solves the problems of the conventional technology.
A thin film of 10 to 50 μm provides highly efficient infrared radiation. In addition, since it is a thin film, it can be applied to complex shapes such as the flame hole of a wire mesh burner or the flame hole of a ceramic burner, and there is no fear of clogging, so it has a wide range of applications. It can also be applied to high-temperature heating surfaces of 900°C to 1000°C. It is also resistant to heat shock and can be applied to various base materials. The manufacturing process is simple, as the coating can be formed by simply applying and baking the coating by spraying. The object of the present invention is to provide a coating having the above effects. Structure of the Invention In order to achieve this object, the present invention provides an organosilicon polymer whose main component is a polyborosiloxane resin and one selected from the group of Pr, Fe, V, Ni, and Co.
A cured coating layer containing a composite oxide of an oxide of one or more elements and ZrSiO 3 and a heat-resistant filler is formed on the surface of the heating element. With this configuration, even with a thin film of 10 to 50 μm, selective radiation can be obtained in which the radiation intensity is low in the near-infrared region of about 6 μm or less and the radiation intensity is high in the far-infrared region of 6 μm or more. Organosilicon polymers, whose main component is polyborosiloxane resin, have properties as "semi-inorganic polymers" and have properties similar to organic polymers at room temperature, making them excellent in terms of operability when used in coatings, etc. ing. When heated, the organic components decompose and form a ceramic with Si, C, and B as the skeleton. Complete ceramicization is carried out at 600°C. Therefore, Pr,
A composite oxide of ZrSiO 3 and one or more oxides selected from the group of Fe, V, Ni, and Co can be relatively easily dispersed into a paint. By applying the paint prepared in this manner by spraying, it is possible to form coatings on various substrates very easily. Since the coating formed in this manner is completely made of ceramic, it has good adhesion to various base materials and sufficient heat resistance up to 900 to 1000°C. Description of Examples "Inorganic Polymer" (SMP-32) manufactured by Showa Denshin Co., Ltd. was used as an organosilicon polymer containing polyborosiloxane as a main component. this is The main component is a polymer with a structure like this. This binder becomes ceramic and stabilizes at 600℃, but due to thermal decomposition during that time, the initial 2/2
3 of the weight is lost and the residue is approximately 1/3 of the weight. A complex oxide of zircon (ZrSiO 3 ) and an oxide of one or more elements selected from the group of Pr, Fe, V, Ni, and Co can be dispersed into an organosilicon polymer using an attritor for approximately 20 This was done by time-dispersed mixing. N-methylpyrrolidone was used as a solvent, and toluene was used as a diluent. A paint was prepared using the composite oxide system shown in Table 1 under the above conditions. The composition of the paint consists of each composite oxide.
100 parts by weight, organosilicon polymer (“SMP-32”)
100 parts by weight, and 100 parts by weight of toluene. These zircon composite oxides are usually used as coloring agents for ceramics, but the particle size is coarse and 10 μm.
It is used with a particle size of m or more.
【表】
本発明においては、0.5〜5μｍの粒径範囲にて
用いるのが望ましいことから、いずれも市販品を
粉砕して、１〜5μｍの粒径範囲にして用いた。
市販品の10μｍ以上のものをそのまま用いた場
合には、塗膜はポーラスになり、密着性が非常に
悪い状態となり、爪でこすると剥れる様な状態に
なる。
赤外線輻射の効率を向上させる観点から、塗膜
厚に注目すると、塗膜厚が厚い方が、赤外線吸収
率が増加し、高放射となる。この点、従来の技術
は、50μｍ以上の膜厚にて塗布して用いるもので
あり、その光学的特性に関して、被覆表面の特性
が主として関係していた。
本発明はこの点、被覆の厚みが50μｍ以上で、
主として５〜20μｍという薄膜下で用いるので、
選択された波長の光の透過が十分起こり得るため
基材の反射特性が、被覆系の光学的特性に関与し
得る。
表１の各試料について、ステンレス基材
（18Cr−３％Al鋼）上に10μｍの膜厚にて塗布し
た後300℃で30分、600℃にて５分焼成して作成し
たサンプルの赤外線分光輻射特性の評価結果を図
に示す。図において、１〜５は、表１の各複合酸
化物を含有し、６は、ステンレス基材のみの分光
輻射特性である。いずれも、選択輻射性、あるい
は、黒体的な高効率輻射性が認められる。
10μｍレベルのコーテイング系としては、従来
にない高効率輻射であると考えられる。Prを含
む系は、とくに遠赤外線の選択輻射特性が優れて
いる。またNiを含む系は、波長依存性の少ない
黒体的な輻射挙動を示している。
ZrSiO3との複合酸化物と有機ケイ素重合体の
600℃加熱残渣に対する配合比して12/10〜45/10
の配合比が良い。配合比が45/10を越えると塗膜
はポーラスになり、密着性が極端に悪くなる。逆
に配合比が12/10以下となると、塗料相の中で複
合酸化物が移動し易くなり、被覆にむらが発出し
たりして、外観上見苦しい表面状態となる。
塗膜物性と、赤外線輻射特性の観点から、最良
の性能が得られる配合条件は24/10〜30/10の範囲
である。
本発明で用いる耐熱性充填剤としては、Al、
Si、Ti、Zn、Ceなどの金属酸化物、炭化物、窒
化物であつて白色系のものであれば、単独もしく
は混合して任意に用いることができる。完成した
被膜の有機ケイ素重合体とZrSiO3系複合酸化物
化外の残部はこの耐熱性充填剤が占めることにな
る。耐熱性充填剤はZrSiO3系複合酸化物と同量
以下にて用いることができる。
発明の効果
以上のように本発明のコーテイング組成物は
(1) ５〜50μｍ（特に10μｍ付近）と極めて薄膜
にて赤外線高輻射能を付与することができる。
(2) 薄膜であるため、ヒートシヨツクに強く、
1000℃レベルの高温下での使用に耐え得る。
(3) １種の複合酸化物で着色化と赤外線輻射効率
の向上が達成可能であり、その輻射パターンを
用途に応じて選定し得る。
(4) スプレーにてコーテイングの形成が可能であ
り金網状金属上から、セラミツクハニカム等の
多くの基材、複雑な形状物に適用可能で、薄膜
であるため、その基材の形状、物性を余り変化
させることがなく適用範囲が広い。
などの効果を有する。[Table] In the present invention, since it is desirable to use a particle size in the range of 0.5 to 5 μm, commercially available products were ground and used in the particle size range of 1 to 5 μm. If a commercially available product with a diameter of 10 μm or more is used as is, the coating film becomes porous and has very poor adhesion, causing it to peel off when rubbed with a fingernail. From the viewpoint of improving the efficiency of infrared radiation, paying attention to the coating film thickness, the thicker the coating film, the higher the infrared absorption rate and the higher the radiation. In this regard, in the conventional technique, coating is performed in a film thickness of 50 μm or more, and the optical properties are mainly related to the properties of the coated surface. In this respect, the present invention has a coating thickness of 50 μm or more,
Since it is mainly used under a thin film of 5 to 20 μm,
The reflective properties of the substrate may contribute to the optical properties of the coating system, since transmission of light of selected wavelengths may well occur. Infrared spectroscopy of each sample in Table 1 created by coating a 10 μm film on a stainless steel substrate (18Cr-3% Al steel) and baking at 300℃ for 30 minutes and 600℃ for 5 minutes. The evaluation results of radiation characteristics are shown in the figure. In the figure, 1 to 5 contain each composite oxide in Table 1, and 6 is the spectral radiation characteristic of only the stainless steel base material. In either case, selective radiation or blackbody-like high-efficiency radiation is observed. It is thought that this is unprecedentedly highly efficient radiation for a coating system at the 10 μm level. Systems containing Pr have particularly excellent selective radiation characteristics for far infrared rays. Furthermore, systems containing Ni exhibit blackbody-like radiation behavior with little wavelength dependence. Composite oxide with ZrSiO 3 and organosilicon polymer
Mixing ratio of 600℃ heating residue is 12/10 to 45/10
Good blending ratio. If the blending ratio exceeds 45/10, the coating film will become porous and the adhesion will be extremely poor. On the other hand, if the blending ratio is less than 12/10, the composite oxide will move easily in the paint phase, causing unevenness in the coating and resulting in an unsightly surface condition. From the viewpoint of coating film properties and infrared radiation properties, the blending conditions that provide the best performance are in the range of 24/10 to 30/10. The heat-resistant filler used in the present invention includes Al,
Any white metal oxide, carbide, or nitride such as Si, Ti, Zn, or Ce can be used alone or in combination. This heat-resistant filler will account for the remainder of the completed film other than the organosilicon polymer and ZrSiO 3 -based composite oxide. The heat-resistant filler can be used in an amount equal to or less than that of the ZrSiO 3 complex oxide. Effects of the Invention As described above, the coating composition of the present invention (1) can provide a high infrared radiation ability in an extremely thin film of 5 to 50 μm (particularly around 10 μm). (2) Because it is a thin film, it is resistant to heat shock.
Can withstand use at high temperatures of 1000℃ level. (3) Coloring and improvement in infrared radiation efficiency can be achieved with one type of composite oxide, and the radiation pattern can be selected depending on the application. (4) Coatings can be formed by spraying, and can be applied to many base materials such as wire mesh metal, ceramic honeycomb, and complex shaped objects. Because the coating is thin, it is possible to form coatings on the shape and physical properties of the base material. Wide range of application without much change. It has the following effects.
図は、本発明を用いたコーテイングの分光輻射
特性図である。
The figure is a spectral radiation characteristic diagram of a coating using the present invention.
Claims (1)
ケイ素重合体と、Pr、Fe、Ｖ、Ni、Coの群から
選定した１種以上の元素の酸化物ZrSiO3との複
合酸化物と、耐熱性充填剤を含有する赤外線輻射
コーテイング組成物。 ２ ZrSiO3との複合酸化物のポリボロシロキサ
ン樹脂を主成分とする有機ケイ素重合体の600℃
加熱残渣に対する配合比が重量比で12/10から45/
１０にて配合した特許請求の範囲第１項記載の赤外
線輻射コーテイング組成物。[Claims] 1. Composite oxidation of an organosilicon polymer mainly composed of polyborosiloxane resin and ZrSiO 3 , an oxide of one or more elements selected from the group of Pr, Fe, V, Ni, and Co. An infrared radiation coating composition comprising a heat-resistant filler and a heat-resistant filler. 2 600℃ of organosilicon polymer whose main component is polyborosiloxane resin, which is a composite oxide with ZrSiO 3
The weight ratio of the heated residue is from 12/10 to 45/
10. The infrared radiation coating composition according to claim 1, which is formulated in accordance with claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58136989A JPS6027669A (en) | 1983-07-26 | 1983-07-26 | Infrared ray radiation coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58136989A JPS6027669A (en) | 1983-07-26 | 1983-07-26 | Infrared ray radiation coating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6027669A JPS6027669A (en) | 1985-02-12 |
| JPH0134957B2 true JPH0134957B2 (en) | 1989-07-21 |
Family
ID=15188174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58136989A Granted JPS6027669A (en) | 1983-07-26 | 1983-07-26 | Infrared ray radiation coating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6027669A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455265U (en) * | 1990-09-17 | 1992-05-12 |
-
1983
- 1983-07-26 JP JP58136989A patent/JPS6027669A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0455265U (en) * | 1990-09-17 | 1992-05-12 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6027669A (en) | 1985-02-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101493951B1 (en) | Eco-friendly ceramic coating composition for low temperature melting and coated product using the same | |
| CN109788763A (en) | The furnace of the dielectric coated glass substrate in furnace chamber is emitted to absorption of electromagnetic radiation and by heat radiation | |
| JPH0684270B2 (en) | Infrared radiation coating | |
| JPS6027669A (en) | Infrared ray radiation coating | |
| JPS60134126A (en) | Far infrared ray radiant material | |
| JPH0120663B2 (en) | ||
| JPS60155267A (en) | Infrared radiation coating composition | |
| JPS59226064A (en) | Infrared-radiating coating composition | |
| JPS59218844A (en) | Infrared radiation coating | |
| JP3744302B2 (en) | Glass ceramics with pearl tones and method for producing the same | |
| JPH0359141B2 (en) | ||
| JP2716043B2 (en) | Road surface heater | |
| JPS61168586A (en) | Light-permeable heat-resistant ceramics | |
| JPS60251186A (en) | Heat resistant sintered body with ceramic infrared high effeciency radiation layer | |
| JPS61147484A (en) | Radiating body | |
| JPH0253871A (en) | Self-cleaning coating | |
| JP2561838B2 (en) | Heat radiation paint | |
| JPH0371472B2 (en) | ||
| JPS61149740A (en) | radiant | |
| JP3421077B2 (en) | Method of forming functional thin film | |
| JP3116468B2 (en) | Burner cap for gas stove | |
| JPH0363192B2 (en) | ||
| JP3839559B2 (en) | Far infrared heater | |
| JPS59226492A (en) | Method of producing infrared ray radiator | |
| JPH0658174B2 (en) | Cooking device |